Miner&#39;s lamp.



0. M. MLLER.

MINBRS LAMP. APPLIoATIoN FILED' JULY 3o, 190s.

935,21 9, Patented sept. 28, 1909.

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MINERS LAMP.

APPLICATION FILED JULY 3-0, 1908.

935,219. Patented Sept. A28, 1909.

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OTTO MAX MLLER, F GELSENKIRCHEN, GERMANY.

MNER S LAMP.

Application led July 30, 1908.

To all whom it may cof/wem:

Be it known that Or'ro Max MLLER, a subject of the German Emperor,residing at Gelsenkirchen, in Germany, have invented certain new anduseful lmprovements in Miners? Lamps, of which the following is aspecification.

The sensitiveness of incandescent bodies,

. and the complicated nature of the vaporizers required forportable'lamps using incandescent bodies, have hitherto prevented theproduction of a practicable, convenient and economical incandescentminers lamp.

The present invention relates to a miners lamp with incandescent burner,and its object to secure for mining work the important advantagespossessed by incandescent lighting, more particularly the advantage ofincreased safety in the presence of lire-damp. This increased safetyarises from the fact that if the flame is properly adjusted no burninggases pass out of the incandescent mantle. lf infiammable gases arepresent and approach the burner, the vapor supply can be so throttledthat there is no risk of overheating the wire netting, the adjustmentfor this purpose being, moreover, that which secures the most eiiicientillumination. The important advantage of security in the presence offire-damp outweighs whatever disadvantages there may be with regard tolack of simplicity and economy.

A construction embodying the invention will now be described withreference to the accompanying drawing, in which- Figure 1 is a planview, with the top of the lamp screwed off, F ig. 2 a cross-section onthe line AMA of F ig. 1, and F ig. 3 a cross-section on the line B-B.

rldhc chimney 12 is supported on the reservoir by the screw-ring 11bearing on the spring-ring 13. Chimney 12 is maintained in position byan upper ring 7 mounted on posts i8, the ring forming also the supportfor a wire protector 9. Within the chimney is suspended the incandescentmantle 111.

r1`he benzin, paraffin, spirit or other liquid fuel in the reservoir 10is raised by a wick 15 and vaporized owing to the conduction of heatthrough the wick tube, the gases thus formed filling a chamber 16 abovesaid tube. 1V hen the lamp is burning normally the vaporized fuel passesthrough the valve 17 to the burner 18 and becomes mixed with airentering through the holes 19. The combustible mixture passes ont of theburner to Specification of Letters Patent.

Patented Sept. 28, 1909.

Serial No. 446,07

the mantle 14. rlfhe air for combustion enters the lamp through holes 20under the screw-ring 11, whence it Hows into the chimney 12 and thenceto the burner as described. For regulating the vaporiZation the spindle21 traversing the reservoir is rotated lby means of the -wheel 22. Thepinion 23 fixed to the spindle rotates the ring 25 mounted in the crown24, and the said ring opens or closes the valve 17 by means of the pin26, according to the direction of rotation.

To allow of testing for fire-damp (for which purpose a small naked fiameis necessary) the lamp is provided with a small wick-burner 27comprising an angular or bent tube 28 which is rotatable by means of anabutment 29 and lever 30 fixed to the spindle 21, the arrangement beingsuch that when the incandescent burner is off the tube 28 is directedtoward the incandescent mantle, and that when the incandescent burner isfull on 7 the tube is directed away from the mantle.

For lighting the lamp and bringing it into normal working condition fuelis pumped from the reservoir by means of the pump 31 and liows throughthe pipe 32 to the dish 33. The fuel in the latter is ignited to heatthe .f'aporizer chamber and start the vaporiZation. For operating thepump the rod 34 is reciprocated by means of the button 35. r1`he dish 33preferably contains absorbent material such as cotton-wool, clay, or thelike, to prevent spilling of the fuel. The liquid in the dish can beignited by means of any suitable igniter commonly employed for lightingminers lamps. n the drawing a known type of frictional device with paperstrips is illustrated. The igniting strip 37 is placed on the pin 3Gfixed to the cover of the reservoir, and passes over the support 38 tothe feed device 39. The free end of the strip enters one of the slots10. When the feed device 3i) is rotated by means of the spindle 41 anddisk 4:2 the strap is pulled, and the spring` 43 bearing on the support38 causes the inflammable mass pulled past it to become ignited. Theflame enters the crown 2st and ignites the fuel in the dish 33.

ln order to raise or lower mantle 14, the latter is suspended from ayoke 416 telescoped by a vertically adjustable tube 44. The latter isslidably mounted within a tubular spindle 41 and is threaded at itsreduced lower end for the engagement with a correspondingly threadedsleeve 45a, extending upwardly from a regulating button 45 which isarranged belov disk 42. A rotation of tube 44 is prevented by a pin 48engaging a longitudinal slot 47 thereof. rlhe vertical adj ustability ofyoke 46 is important in case the mantle breaks 0E near the top andslides down till it rests on the ring 49. In that case the yoke, withthe upper part of the mantle, can be lowered until the two parts of themantle are in contact again and the lamp can continue in use for thetime being. To reduce risk of injury to a minimum the mantle iselastically supported by means of springsl 50 and 5l within tube 44.

lt is obvious that the invention is not restricted to the particularform of construction here illustrated and described. Many modificationscan be made without departing from the principle of the invention.

What l claim as my invention and desire to secure by Letters Patent ofthe United States is :e

l. A miners lamp comprising a fuel reservoir, a t transparent chimneymounted thereon, a wire protector on the chimney, a burner carried bythe reservoir and inelosed within the chimney, an incandescent mantlesuspended above said burner, and a movably mounted iredamp testingburner adapted to be swung into proximity to the mantle.

2. A miners lamp comprising a fuel reservoir, a transparent chimneymounted thereon, a wire protector on the chimney, a wick tube within thereservoir, a valvecon trolled main burner carried by the reservoir andcommunicating with the wick tube, an incandescent mantle suspended abovesaid burner, and a fire-damp testing burner arranged in proximity to themantle.

3. A miners lamp comprising a fuel reservoir, a transparent chimneymounted thereon, a wire protector on the chimney, a wick tube within thereservoir, a valve-controlled main burner carried by the reservoir andcommunicating with the wick tube, an incandescent mantle suspended abovesaid burner, and a movable lire-damp testing I burner mounted on saidreservoir and operatively connected to the burner valve.

4. A miners lamp comprising a fuel reservoir, a transparent chimneymounted thereon, a wire protector on the chimney, a wick tube within thereservoir, a valve-controlled main burner carried by the reservoir andcommunicating with the wick tube, a yoke adjustably secured to thereservoir, an incandescent mantle suspended from the yoke above theburner, and a bent rotatable fire-damp testing burner operatively connected with the main burner valve.

5. A miners lamp comprising a fuel reservoir, a transparent chimneymounted thereon, a wire protector on the chimney, a wick tube within thereservoir, a valve-conti'olled main burner carried by the reservoir andcommunicating with the wick tube, an incandescent mantle suspended abovesaid burner, a movable lire-damp testing burner operatively connectedwith the main burner valve, an auxiliary burner below the main burner,and a pump for conveying fuel from the reservoir to said auxiliaryburner.

G. it. miners lamp comprising in combination with a vapor burner anincandescent body, a fuel reservoir, atransparent chimney, a wireprotector, a fuel vaporizer, a wick-burner, means for regulating thesupply of vaporized fuel to the vapor burner, and means for adjusting`the wick-burner so that it is directed toward or away from theincandescent body, said regulating and adjusting means being so relatedthat when the vapor-supply to the vapor burner is cut olf 'thewick-burner is directed toward the incandescent body and that when thevapor supply is full on the wick-burner is oppositely directed.

Signed by me at Barmen, Germany, this ll" day of July 1908.

OTTO MAX MULLER. lVitnesses O'r'ro KNIG, VM. VAsi-HNGTON BRUNSWICK.

.man

